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Acetic Acid → 6-chloro-4-(5-(1-ethylpiperidin-4-yl)pyridin-2-ylamino)-2-methylpyridazin-3(2H)-one

HRID 449623
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HRID 449623 반응식
[Cl:1][C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:16]=[CH:15][C:14]([CH:17]3[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]3)=[CH:13][N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[N:7]=1.[CH:23](=O)[CH3:24].C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>O.C1COCC1>[Cl:1][C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:16]=[CH:15][C:14]([CH:17]3[CH2:22][CH2:21][N:20]([CH2:23][CH3:24])[CH2:19][CH2:18]3)=[CH:13][N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[N:7]=1
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참가 물질

8

반응물 5

HCID 176Acetic AcidHCID 177AcetaldehydeHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 667421406-chloro-2-methyl-4-(5-(piperidin-4-yl)pyridin-2-ylamino)pyridazin-3(2H)-one

생성물 1

HCID 667427666-chloro-4-(5-(1-ethylpiperidin-4-yl)pyridin-2-ylamino)-2-methylpyridazin-3(2H)-one
수율 62.1%

시약·촉매·용매 2

HCID 962Water용매HCID 8028Tetrahydrofuran용매

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온도
0 °C

실험 절차

In a 100 mL round-bottomed flask, 6-chloro-2-methyl-4-(5-(piperidin-4-yl)pyridin-2-ylamino)pyridazin-3(2H)-one (179 mg, 560 μmol, Eq: 1.00) and acetaldehyde (247 mg, 316 μl, 5.6 mmol, Eq: 10.0) were combined with THF (5.0 ml) to give a light yellow solution. Acetic acid (33.6 mg, 32.0 μl, 560 μmol, Eq: 1.00) was added. The reaction mixture was cooled to 0° C. Sodium triacetoxyborohydride (178 mg, 840 μmol, Eq: 1.5) was added. The reaction mixture stirred at room temperature for 2 h. The reaction was poured into water, and then saturated NaHCO3 was added to the solution until it was basic. The solution was extracted twice with EtOAc, and then the organic layers were washed with brine, dried over Na2SO4 and concentrated in vacuo to give a solid. The solid was triturated with ether to give 6-chloro-4-(5-(1-ethylpiperidin-4-yl)pyridin-2-ylamino)-2-methylpyridazin-3(2H)-one (121 mg, 62%). LC/MS-ESI observed [M+H]+ 348.

후처리

  1. customto give a light yellow solution
  2. extractionThe solution was extracted twice with EtOAc
  3. washthe organic layers were washed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customto give a solid
  7. customThe solid was triturated with ether

출처 및 근거

ORD 기록
ord-8b60a4b0f4204ca7b4bd7123c5f262f6
출처 데이터셋
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08481540B2

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